Hello there,
This patch adds write support to the overlapping boot sector used by
the -kernel command line option.
Without the patch, guests booted with -kernel will fail updating boot
sector. This results in a fdisk that is unable to update the partition
table in the running kernel, but is able to write the correct boot
sector to disk.
Please apply.
/ magnus
Index: block.c
===================================================================
RCS file: /cvsroot/qemu/qemu/block.c,v
retrieving revision 1.23
diff -u -p -r1.23 block.c
--- block.c 30 Oct 2005 18:30:10 -0000 1.23
+++ block.c 25 Nov 2005 08:05:55 -0000
@@ -444,6 +444,10 @@ int bdrv_write(BlockDriverState *bs, int
return -1;
if (bs->read_only)
return -1;
+ if (nb_sectors == 0)
+ return 0;
+ if (sector_num == 0 && bs->boot_sector_enabled)
+ memcpy(bs->boot_sector_data, buf, 512);
return bs->drv->bdrv_write(bs, sector_num, buf, nb_sectors);
}
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